diff --git a/usr/lib/hosts-switch/webapp/utils/index.js b/usr/lib/hosts-switch/webapp/utils/index.js
index 0aa86b9..ceb8c1e 100644
--- a/usr/lib/hosts-switch/webapp/utils/index.js
+++ b/usr/lib/hosts-switch/webapp/utils/index.js
@@ -20,14 +20,15 @@ export function checkPermission() {
 
 export async function getHistory() {
   if (await native.fs.isfile(LOCK_FILE)) {
-    var cache = await native.fs.read(HOST_FILE)
+    let cache = await native.fs.read(HOST_FILE)
     return JSON.parse(cache)
   }
 
-  var cache = native.fs.read('/etc/hosts').toString()
-  var records = cache.split(/[\n\r]+/)
-  var list = []
-  var dict = {}
+  let cache = await native.fs.read('/etc/hosts').toString()
+  let records = cache.split(/[\n\r]+/)
+  let list = []
+  let dict = {}
+
   records.forEach(str => {
     str = str.trim()
     let matches = str.match(/^(#*?)\s*(\d+\.\d+\.\d+\.\d+)\s+(.*)/)
@@ -68,8 +69,10 @@ export async function getHistory() {
     }
   })
   list = null
-  native.fs.write(HOST_FILE, JSON.stringify(dict))
-  native.fs.write(LOCK_FILE, '')
+  try {
+    await native.fs.write(HOST_FILE, JSON.stringify(dict))
+    await native.fs.write(LOCK_FILE, '')
+  } catch (err) {}
   return dict
 }